Knife blade



FIG. 1 is a left side elevational view of a knife blade with the knife handle depicted in phantom lines which forms no part of the claimed design for this invention, the right, opposite, side of which is a mirror image thereof;

FIG. 2 is a top plan view of the knife blade of FIG. 1, the bottom plan view of which is a mirror image thereof;

FIG. 3 is a rear elevational view of the knife blade of FIG. 1; and,

FIG. 4 is a front elevational view of the knife blade of FIG. 1.

The broken lines shown are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a knife blade, as shown and described. 